It is demonstrated that boron-doped nanowires have predominantly long-term stable wurtzite phase while the majority of phosphorus-doped ones present diamond phase. A simplified model based on the different solubility of boron and phosphorus in gold is proposed to explain their diverse effectiveness in retaining the wurtzite phase. The wurtzite nanowires present a direct transition at the Γ point at approximately 1.5 eV while the diamond ones have a predominant emission around 1.1 eV. The aforementioned results are intriguing for innovative solar cell devices.
Preparing the way for doping wurtzite silicon nanowires while retaining the phase / Filippo Fabbri;Enzo Rotunno;Laura Lazzarini;Daniela Cavalcoli;Antonio Castaldini;Naoki Fukata;Keisuke Sato;Giancarlo Salviati;Anna Cavallini. - In: NANO LETTERS. - ISSN 1530-6984. - STAMPA. - 13:12(2013), pp. 5900-5906. [10.1021/nl4028445]
Preparing the way for doping wurtzite silicon nanowires while retaining the phase
CAVALCOLI, DANIELA;CAVALLINI, ANNA
2013
Abstract
It is demonstrated that boron-doped nanowires have predominantly long-term stable wurtzite phase while the majority of phosphorus-doped ones present diamond phase. A simplified model based on the different solubility of boron and phosphorus in gold is proposed to explain their diverse effectiveness in retaining the wurtzite phase. The wurtzite nanowires present a direct transition at the Γ point at approximately 1.5 eV while the diamond ones have a predominant emission around 1.1 eV. The aforementioned results are intriguing for innovative solar cell devices.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.